Seawater carbonate chemistry and calcification rate of cold-water coral Lophelia pertusa during experiments, 2011, supplement to: Form, Armin; Riebesell, Ulf (2011): Acclimation to ocean acidification during long-term CO2 exposure in the cold-water coral Lophelia pertusa. Global Change Biology, 18(3), 843-853

• Main Authors: Form, Armin, Riebesell, Ulf
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2012
• Subjects: Animalia; Benthic animals; Benthos; Calcification/Dissolution; Cnidaria; Containers and aquaria 20-1000 L or < 1 m**2; Deep-sea; Laboratory experiment; Lophelia pertusa; North Atlantic; Single species; Temperate; Experimental treatment; Alkalinity, total; Carbon, inorganic, dissolved; Calcification rate of calcium carbonate per polyp; pH; Carbon dioxide; Partial pressure of carbon dioxide water at sea surface temperature wet air; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Aragonite saturation state; Calcite saturation state; Carbon dioxide, partial pressure, standard deviation; Salinity; Salinity, standard deviation; Temperature, water; Temperature, standard deviation; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved, standard deviation; Calcification rate; Carbonate system computation flag; Bicarbonate ion, standard deviation; pH, standard deviation; Aragonite saturation state, standard deviation; Potentiometric open-cell titration; Automated segmented-flow analyzer Quaatro; Buoyant weighing technique Davies, 1989; Calculated using seacarb after Nisumaa et al. 2010; Calculated using CO2SYS; Conductivity meter WTW, Weilheim, Gemany; see references; Biological Impacts of Ocean Acidification BIOACID; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.778439; https://doi.pangaea.de/10.1594/PANGAEA.778439

Ocean acidity has increased by 30% since preindustrial times due to the uptake of anthropogenic CO2 and is projected to rise by another 120% before 2100 if CO2 emissions continue at current rates. Ocean acidification is expected to have wide-ranging impacts on marine life, including reduced growth and net erosion of coral reefs. Our present understanding of the impacts of ocean acidification on marine life, however, relies heavily on results from short-term CO2 perturbation studies. Here we present results from the first long-term CO2 perturbation study on the dominant reef-building cold-water coral Lophelia pertusa and relate them to results from a short-term study to compare the effect of exposure time on the coral's responses. Short-term (one week) high CO2 exposure resulted in a decline of calcification by 26-29% for a pH decrease of 0.1 units and net dissolution of calcium carbonate. In contrast, L. pertusa was capable to acclimate to acidified conditions in long-term (six months) incubations, leading to even slightly enhanced rates of calcification. Net growth is sustained even in waters sub-saturated with respect to aragonite. Acclimation to seawater acidification did not cause a measurable increase in metabolic rates. This is the first evidence of successful acclimation in a coral species to ocean acidification, emphasizing the general need for long-term incubations in ocean acidification research. To conclude on the sensitivity of cold-water coral reefs to future ocean acidification further ecophysiological studies are necessary which should also encompass the role of food availability and rising temperatures. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI).